Question

define and one one example for rusting, crystallization, galvanisation​

Answer 1

Answer:

Rusting:

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Here is the word equation for the reaction: iron + water + oxygen → hydrated iron(III) oxide.

Crystallization:

• Crystallization is a method for transforming a solution into a solid, where a supersaturated solution nucleates the solute by a chemical equilibrium controlled process. Uniform particles with well-defined morphology are formed, and these readily re-dissolve.
• great examples of the crystallization of water. Another interesting example is the crystallization of honey. When bees regurgitate honey into the honeycomb, it is a liquid

Galvanisation:

• Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot dip galvanizing, in which steel sections are submerged in a bath of molten zinc.
• Galvanizing protects the underlying iron or steel in the following main ways: The zinc coating, when intact, prevents corrosive substances from reaching the underlying steel or iron. The zinc protects iron by corroding first.

Explanation:

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Answer 2

Rusting:- Rusting is a slow process in which iron slowly reacts with the oxygen in air in the presence of moisture and produces a brown flaky substance called rusting..

Crystallisation:- The process of separating a pure substance on the form of crystals from it's hot saturated solution by cooling is called crystallisation.

For example :- common salt(NaCl)

Galvanisation:- The process of applying a thin layer (or coating) of zinc metal on iron objects is called galvanisation.

For example:- The iron sheet used for making drums, buckets, dustbin, coolers etc.

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